Gas fueled singeing burner



sept. 23, 1969 FIGZ FIGJ

v INVENTORS yosM/(Azu 54H00 K/YosHl NAKABA BY A Afro am'y SPt 23, 1969 YosHlKAzu sANDo ET AL 3,468,617

GAS FUELED SINGEING BURNER Original Filed Jan. 1o, 1967 2 sheetsheet 2 IN VEN TORS WSH/maza .sA/voo K/YosH/ NA (464 i gi/0L...-

A TTOFNGYS' United States Patent O im. c1. ima 13726,- Bosb 1/14 U.s. c1. 431-350 s claims A singe burner is made up of a plurality of juxtaposed thin plate elements each of which is slotted inwardly from opposite (i.e. top and bottom) edges. Alternate ones of the plates have the slots arranged in a laterally displaced manner and the arrangement and construction is such that gas may ilow upwardly through a vertical slot of one plate and then longitudinally into the lowermost portion of the slot of the next plate which is cut inwardly from the opposite edge and then ow upwardly in the slot to discharge above the stack of juxtaposed plates for burning in a uniform ame.

The construction also includes means for immediately closing oi a connection between a gas supply tube and the burner which comprises a coiled plate element which is adapted to be slid along a slot disposed between the mounting bracket for the gas supply tube and the burner in order to cut off the supply of gas to Selected portions of the burner when desired for the regulation oi the flame width and for cutting out the llame.

This is a division of application Ser. No. 608,345, filed Jan. 10, 1967.

Brief summary of the invention The present invention relates to an apparatus for the careful singeing of cloth materials, particularly synthetic ber cloths, and to a new and useful singe burner construction.

ln accordance with the present invention there is provided a burner which is made up of a plurality of thin metal plates, each of which has slots. The plates are combined to form a burner nozzle for producing a uniform ilame along the complete operating length of the burner. In addition, the burner is covered with a nozzle made of a fire-proof material which extends over the top and side faces of the burner and provides a hot zone to insure the complete combustion of the gas forming the llame and to produce an effective hot air blast from the combustion so that the flame may be directed uniformly over the surface of the cloth which is to be singed. The construction is such that the llame will also be directed over a very wide area and the temperature of the flame will be uniform along the whole area of singeing.

In accordance with a further feature of the invention, the burner includes a mounting bracket for supporting it over a gas supply tube which is adapted to feed the gas for combustion upwardly into the burner. The mounting bracket includes a slot between the supply tube and the burner which may be closed by means of an adjustable llame cutout member which may be inserted into the slot` In the preferred form the llame cutout member comprises a coil spring which in directed into the slot to cut oi the gas supply and stop the flame when desired.

ICC

A further object of the invention is to provide an improved singe burner which is made up of a plurality of juxtaposed burner plates, each of which is provided with a slot extending inwardly from a top and a bottom face and with successive plates having slots which are oiset from the previous plates in a lateral direction so that the feeding of the gas will be upwardly through a slot in a rst plate then longitudinally into the slot of a next plate and upwardly above the burner grid which is formed.

A further object of the invention is to provide a mounting for a singeing burner for positioning the burner plate assembly above a gas supply tube for the ow of gas from the tube upwardly to the burner and which includes a nozzle covering over the top of the burner made of a non-inflammable material which is adapted to get hot in order to provide a high and even temperature singeing flame and which also includes means disposed between the gas supply tube and the burner for closing ott the supply of gas in order to extinguish the flame or any portion thereof along the width of the burner.

A further object of the invention is to provide a singeing apparatus which includes a plurality of closed temperature-controlled casing members in which are positioned supports for adjustably mounting a duid-cooled guide roller for a synthetic liber web which may be guided into the casing and which includes further a singeing burner arrangement in the casing and being pivotally mounted adjacent the cooled roller so that it may be oriented in a selected direction for singeing the fabric which is moved around the roller.

A further object of the invention is to provide a singe burner which is simple in design, rugged in construction and economical to manufacture.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part yoi this specification. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and described preferred embodiments of the invention.

Brief description of the drawings In the drawings:

FIG. 1 is a side elevational view of a plate employed in a singe burner constructed in accordance with the invention;

FIG. 2 is a view similar to FIG. 1 of lthe adjacent plate to that indicated in FIG. 1;

FIG. 3 indicates a side elevational view showing the assembly of two plates together;

FIG. 4 is a partial perspective view of a burner constructed with plates similar to but of slightly different design from those indicated in FIGS. l and 3;

FIG. 5 is a sectional view of a burner assembly constructed in accordance with the invention; and

FIG. 6 is an elevational view of an end of the burner of FIG. 5 and indicating the llame cutout device.

Referring to the drawings in particular, the invention embodied therein as indicated in FIGS. 1 to 4 comprises a burner generally designated 5 made up of a plurality of individual plates 15 made of a material such as metal.

The plates 15 are provided with a bottom notch 16 which extends vertically upwardly from the bottom edge and a top notch 18 which extends vertically downwardly from a top edge at a spaced location from the bottom slot. In addition, the lower end of the top slot 18 is provided with a cross slot 17. In FIG. 8 there is indicated the next adjacent plate 15' which is arranged on each side of the plate 15. The plate 15 includes top and bottom notch 16' and 18' and cross or transverse notches 17 in a manner similar to the plate 15 but arranged on opposite sides of the centerline of the plate. When the two plates vare assembled together, as indicated in FIG. 9, openings 19 at each end are aligned. In addition, the slot 16 of the plate 15 is in communication at its inner end with the transverse slot 17' of -the plate 15 so that the gas flow may be upwardly through the slot 16 to the transverse slot 17 and upwardly through the vertical slot 18 to the top of the burner at which place the gas is ignited to form a flame. In a similar manner the slot 16 of the plate 15 communicates at its inner end with the cross slot 17 of the plate 15 so that flow is upwardly through the cross slot portion 17 and the vertical slot 18 to the top of the burner.

As indicated in FIG. l, individual burner plates 15" and 15"' are held together by through bolts which extend through the openings 19, 19 and are secured at each end such as by nut members 21. Each plate includes a raised central portion which forms the raised boss a in FIG. l0. The width of the burner is made so that the working width would be a little longer than the maximum width of the material webs which are to be singed. The burner includes means, however, for cutting out any portion of the length of the flame to be described hereinafter.

Blind shutter plates 22, 22', etc. are inserted between groups of plate assemblies in order to provide unequal lengths of such groups along the Width of the burner. The spacing between blind plates 22 is advantageously around from 50 to 150 mm. The plates are of uniform outline and do not have any notch or opening so that each group is closed off from the next succeeding group by the blinds.

As best indicated in FIGS. 5 and 6, the burner generally designated 5 is positioned into a slot defined in a bracket member or burner body generally designated 23. A tire-proof nozzle cover 24 is positioned on the top of the bracket 23 over the burner 5 on each side of the boss 5a to align a cavity 30 therein `over the openings defined by the slots 18 and 18' to permit the burning of the iiame partly within the cavity and partly exteriorly of the cavity, as indicated at 31 in FIG. 5. The nozzle cover 24 is held in place by resilient fitting members 25 which engage over a ledge portion of the nozzle member and are bolted in place such as by bolts 60.

As indicated in FIG. 5, the nozzle member 24 is designed to engage over an upwardly formed central portion 5a and combustion will take place partially within the chamber 30 defined within the interior of the lireproof cover nozzle 24. The flame 31 which exits at the exterior of the nozzle will burn uniformly when the temperature of the combustion goes up after combustion takes place from 1 to 3 minutes, the fire-proof nozzle cover will become red-hot and the tiame will be uniformly blown out in the form of hot air from the slit opening defined at the upper end of the chamber 30 of the nozzle member 24. This greatly increases the eliiciency of the burner and eliminates the possibility of incomplete combustion. As the red heating of the tire-proof nozzle 24 proceeds further, heat is transmitted from the body of the burner to the bracket 23 and for this reason the bracket is provided with cooling fluid passages 32 through which a cooling uid is circulated in order to maintain the bracket at satisfactory temperatures. For example, water is circulated through the passages 32 and it is maintained at a temperature below 30 C.

A feature of the bracket construction 23 is that it is provided with a slot 33 which is adapted to receive a ame cutout plate or closing member 34 which is slid along the slot below the burner 5 when any portion of the flame is to be cut out. Plate 34 thus effectively closes off the supply of gas which is directed out of a gas supply pipe 26 arranged within a cavity 28 of the bracket 23. The gas from the pipe is directed through openings 29 around through the gas pressure regulating chamber 28 and upwardly through the slotted openings 16, 16 of the plates 15 and 15 in order to provide fuel for maintaining the flame at 31. When the plate 34 is in position, the gas supply at the particular burner section in which the plate 34 is located will be stopped so that the ame will be cut out. The cutout plate 34 is regulated by a feeding device which includes two feeding rollers 38, 39 which are adapted to feed the cutout plate strip 34 from a roll 37 thereof. The plate 34 is advantageously of a spring-like material so that it may be easily rolled up on the spool 37. The gas pipe 26 extends along the entire length of the regulating chamber and out through one end of the bracket 23 which is freely rotatable. 'Ihe plate 34 is fed out to close the appropriate portion of the gas supply flow area by rotation of the rolls 39 with appropriate sealing being provided. The pipe 26 is supported by a bearing 36. A gas leakage prevention sealing device 35 is located adjacent the inlet end of the pipe as indicated in FIG. 6. Since there is a possibility that the length of the flame cutout plate 34 must be limited depending on the position of the bearings for the gas pipe 26, the cutout plate is made with a working width a little larger than the maximum width of the cloth material being singed so that in some instances appropriate additional means may be required for cutting out unnecessary portions of the ame. The blind plates 22 make it possible to cut out whole sections of the burner in accordance with positioning of the cutout plate 34.

The present invention permits not only the very eficient singeing of the cloth material and excellent results in respect to the linal condition of the material which is treated, but it also provides for a device which is very eicient and will operate with low gas consumption.

While specific embodiments of the invention have been shown and described in detail to illustrate the application of the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.

What is claimed is:

1. A burner comprising an assembly of a plurality of substantially rectangular plates arranged in side-by-side juxtaposition, said plurality of plates including first plates having a slot cut inwardly from the top thereof and terminating at its inner end in a transverse slot and having a slot cut inwardly in a substantially vertical manner from the bottom thereof, said plates including second plates which are arranged alternately with said first plates and include a vertical slot cut inwardly from the bottom thereof which is aligned with the transverse portion of the slot of the first plate so as to provide a supply of gas from the vertical slot to the transverse slot and up through the vertical slot of said iirst plates and a second slot extending downwardly from the top wall of said second plate and terminating at its inner end in a transverse slot portion which communicates with the vertical slot defined upwardly from the bottom wall of said first plate, and gas supply means connected to said burner plate assembly adjacent the bottom thereof for supplying gas to the Vertical slots cut inwardly from the bottom of said plates for flow upwardly through the vertical slots cut inwardly from the tops of said iirst and second plates for exiting at Stich location for burning.

2. A burner according to claim 1, including a fireproof nozzle member mounted over said burner plate assembly and having an interior cavity with a nozzle opening, the combustion taking place partially in the cavity of said lire-proof nozzle cover and partially as a llame jet exiting through the opening.

3. A burner according to claim 1, wherein said gas supply means comprises a bracket having a central opening through which the gas supply pipe extends, said gas supply pipe having openings for the flow of gas from the gas pipe to the central opening of said bracket, said central opening being closed at each end and communicating upwardly with the slots of said burner assembly, and means for circulating a cooling liquid through said bracket adjacent said burner.

6 References Cited UNITED STATES PATENTS 2,199,951y 5/1940 Gorman 239-563 2,288,898 7/1942 French.

2,543,688 2/ 1951 Coriolis et a1. 431--353 2,713,894 7/1955 Sage 239-555 FREDERICK L. MATTESON, JR., Primary Examiner 0 H. B. RAMEY, Assistant Examiner U.S. Cl. X.R. 239-655, 600 

1. A BURNER COMPRISING AN ASSEMBLY OF A PLURALITY OF SUBSTANTIALLY RECTANGULAR PLATES ARRANGED IN SIDE-BY-SIDE JUZTAPOSITION, SAID PLURALITY OF PLATES INCLUDING FIRST PLATES HAVING A SLOT CUT INWARDLY FROM THE TOP THEREOF AND TERMINATING AS ITS INNER END IN A TRANSVERSE SLOT AND HAVING A SLOT CUT INWARDLY IN A SUBSTANTIALLY VERTICAL MANNER FROM THE BOTTOM THEREOF, SAID PLATES INCLUDING SECOND PLATES WHICH ARE ARRANGED ALTERNATELY WITH SAID FIRST PLATES AND INCLUDE A VERTICAL SLOT CUT INWARDLY FROM THE BOTTOM THEREOF WHICH IS ALIGNED WITH THE TRANSVERSE PORTION OF THE SLOT OF THE FIRST PLATE SO AS TO PROVIDE A SUPPLY OF GAS FROM THE VERTICAL SLOT TO THE TRANSVERSE SLOT AND UP THROUGH THE VERTICAL SLOT OF SAID FIRST PLATES AND A SECOND SLOT EXTENDING DOWNWARDLY FROM THE TOP WALL OF SAID SECOND PLATE AND TERMINATING AT ITS INNER END IN A TRANSVERSE SLOT PORTION WHICH COMMUNICATES WITH THE VERTICAL SLOT DEFINED UPWARDLY FROM THE BOTTOM WALL OF SAID FIRST PLATE, AND GAS SUPPLY MEANS CONNECTED TO SAID BURNER PLATE ASSEMBLY ADJACENT THE BOTTOM THEREOF FOR SUPPLYING GAS TO THE VERTICAL SLOTS CUT INWARDLY FROM THE BOTTOM OF SAID PLATES FOR FLOW UPWARDLY THROUGH THE VERTICAL SLOTS CUT INWARDLY FROM THE TOPS OF SAID FIRST AND SECOND PLATES FOR EXITING AT SUCH LOCATION FOR BURNING. 